期刊
OPTICS COMMUNICATIONS
卷 281, 期 18, 页码 4623-4625出版社
ELSEVIER
DOI: 10.1016/j.optcom.2008.05.041
关键词
on-off switch; photonic crystals; nematic liquid crystals; sub-terahertz waves; field-induced rotation
类别
资金
- German Academic Exchange Service (DAAD)
- Iran Telecommunication Research Center (ITRC)
- Ministry of Information and Communication Technology (ICT) of Iran
A sub-terahertz switch is realized by infiltration of a two-dimensional photonic crystal (PC) with the liquid crystal 5CB. On-off switching is based on a shift of the bandgap of the PC by applying an external electric field which rotates the 5CB molecules. We confirm theoretically and experimentally that rotating the optical axis of the 5CB molecules considerably affects the transmission of the electromagnetic waves of TM polarization in the stop band. The effect can be used for on-off switching of the electromagnetic waves in the sub-terahertz range. Experimentally we demonstrate an extinction ratio of 13.3 dB at 91 GHz. (C) 2008 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据